afb7545cd4d174f830cf1b4ec248feecbad2fd855386fd4494bf22ccc0e8b0f5

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
19/04/2024, 07:39

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General

Target

2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe
Size

96KB
MD5

b9b14909be833659df678c64a37e0b17
SHA1

58a76e0890b0f4ae39307b015f756215d453bd94
SHA256

afb7545cd4d174f830cf1b4ec248feecbad2fd855386fd4494bf22ccc0e8b0f5
SHA512

771bbdf0cbce6740706d8278c18c5ffa54981e71de1322028a041b21db338394c3acd2fe55ae2f1084e5250a3f2c98f58de21987511090abac3ede01ca5d0cdb
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/bS:zCsanOtEvwDpjB+

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2852-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001224c-11.dat	CryptoLocker_rule2
behavioral1/memory/2852-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2956-20-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2852-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001224c-11.dat	CryptoLocker_set1
behavioral1/memory/2852-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2956-20-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2852-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b00000001224c-11.dat	UPX
behavioral1/memory/2852-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2956-20-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2956	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2852	2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2852-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b00000001224c-11.dat	upx
behavioral1/memory/2852-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2956-20-0x0000000000500000-0x0000000000510000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2852 wrote to memory of 2956	2852	2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe	28
PID 2852 wrote to memory of 2956	2852	2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe	28
PID 2852 wrote to memory of 2956	2852	2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe	28
PID 2852 wrote to memory of 2956	2852	2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2852
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2956

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
96KB

MD5
f27b7a1f420b3fcd0209c26db33be431

SHA1
f207e13c0c0a4d2b7f7e89481cd11d7b3534a867

SHA256
34664888d9e17938075008a9b11448c54d110be1d23bc728f2e96d4ab8dcd9d9

SHA512
75a384cd99531309d2d395d5252298d1526cdd4ee7913de1811fb6dd6e683483a214739761ed0777c33a723cd6cc80c0ed36b564e89cc77f015c884d0a6f2c05

Download Submit
memory/2852-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2852-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2852-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2852-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2852-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2956-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2956-20-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2956-17-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download